It is the future, and the earth has been covered with wastelands and cities. The powerful, faceless Iron First Corporation has replaced the last forms of free government. Now, they are developing a new, 42-foot, armed robot known as the Iron Soldier. With the Iron Soldier, no one will be able to stop the Iron First Corporation. The only hope is the Resistance, a group that has managed to capture one of the Iron Soldier prototypes. You are a pilot for the Resistance. It's up to you to pilot the robot and bring down the Iron Fist.
Iron Soldier is a mech sim played from an in-cockpit view. There are 16 single player missions. Objectives involve taking out certain targets, defending convoys, collecting items, and so on.